TY - GEN
T1 - The Asaoka method revisited
AU - Mesri, G.
AU - Huvaj-Sarihan, N.
PY - 2009
Y1 - 2009
N2 - The Asaoka method is a useful tool for interpreting and extrapolating field settlement observations. The graphical procedure to estimate end-of-primary (EOP) settlement and coefficient of consolidation is simple, however, mathematical deduction of the method by Asaoka is not. The Asaoka method is deduced here using simple algebra for one-dimensional compression with and without vertical drains. The Terzaghi theory of one-dimensional consolidation, and the Barron equal strain theory of consolidation modified to include effects of smear, well resistance and vertical water flow through soil, are used. The Asaoka graphical procedure is applied to settlement observations at Skå-Edeby test area I with three spacings of sand drains and area IV without vertical drains. The Asaoka method is not recommended for predicting secondary settlement.
AB - The Asaoka method is a useful tool for interpreting and extrapolating field settlement observations. The graphical procedure to estimate end-of-primary (EOP) settlement and coefficient of consolidation is simple, however, mathematical deduction of the method by Asaoka is not. The Asaoka method is deduced here using simple algebra for one-dimensional compression with and without vertical drains. The Terzaghi theory of one-dimensional consolidation, and the Barron equal strain theory of consolidation modified to include effects of smear, well resistance and vertical water flow through soil, are used. The Asaoka graphical procedure is applied to settlement observations at Skå-Edeby test area I with three spacings of sand drains and area IV without vertical drains. The Asaoka method is not recommended for predicting secondary settlement.
KW - Asaoka
KW - Coefficient of consolidation
KW - Settlement
KW - Vertical drains
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U2 - 10.3233/978-1-60750-031-5-131
DO - 10.3233/978-1-60750-031-5-131
M3 - Conference contribution
AN - SCOPUS:80054842119
SN - 9781607500315
T3 - Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering
SP - 131
EP - 134
BT - Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering
T2 - 17th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2009
Y2 - 5 October 2009 through 9 October 2009
ER -